/*
 * Copyright (c) 2018, vindell (https://github.com/vindell).
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.github.vindell.dbperms.jdbc.wrapper;

import java.io.InputStream;
import java.io.Reader;
import java.math.BigDecimal;
import java.net.URL;
import java.sql.Array;
import java.sql.Blob;
import java.sql.Clob;
import java.sql.Date;
import java.sql.NClob;
import java.sql.ParameterMetaData;
import java.sql.PreparedStatement;
import java.sql.Ref;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.RowId;
import java.sql.SQLException;
import java.sql.SQLXML;
import java.sql.Time;
import java.sql.Timestamp;
import java.util.Calendar;

import com.github.vindell.dbperms.jdbc.common.PreparedStatementInformation;
import com.github.vindell.dbperms.jdbc.common.ResultSetInformation;
import com.github.vindell.dbperms.jdbc.event.JdbcEventListener;

/**
 * This implementation wraps a {@link PreparedStatement} and notifies a
 * {@link JdbcEventListener} about certain method invocations.
 * <p>
 * This class implements the Wrapper or Decorator pattern. Methods default to
 * calling through to the wrapped request object.
 *
 * @see PreparedStatement
 */
public class PreparedStatementWrapper extends StatementWrapper implements PreparedStatement {

	private final PreparedStatement delegate;
	private final PreparedStatementInformation statementInformation;

	public static PreparedStatement wrap(PreparedStatement delegate,
			PreparedStatementInformation preparedStatementInformation, JdbcEventListener eventListener) {
		if (delegate == null) {
			return null;
		}
		return new PreparedStatementWrapper(delegate, preparedStatementInformation, eventListener);
	}

	protected PreparedStatementWrapper(PreparedStatement delegate,
			PreparedStatementInformation preparedStatementInformation, JdbcEventListener eventListener) {
		super(delegate, preparedStatementInformation, eventListener);
		this.delegate = delegate;
		statementInformation = preparedStatementInformation;
	}

	@Override
	public ResultSet executeQuery() throws SQLException {
		SQLException e = null;
		long start = System.nanoTime();
		try {
			eventListener.onBeforeExecuteQuery(statementInformation);
			return ResultSetWrapper.wrap(delegate.executeQuery(), new ResultSetInformation(statementInformation),
					eventListener);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterExecuteQuery(statementInformation, System.nanoTime() - start, e);
		}
	}

	@Override
	public int executeUpdate() throws SQLException {
		SQLException e = null;
		long start = System.nanoTime();
		int rowCount = 0;
		try {
			eventListener.onBeforeExecuteUpdate(statementInformation);
			rowCount = delegate.executeUpdate();
			return rowCount;
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterExecuteUpdate(statementInformation, System.nanoTime() - start, rowCount, e);
		}
	}

	@Override
	public void setNull(int parameterIndex, int sqlType) throws SQLException {
		SQLException e = null;
		try {
			delegate.setNull(parameterIndex, sqlType);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, null, e);
		}
	}

	@Override
	public void setBoolean(int parameterIndex, boolean x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setBoolean(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setByte(int parameterIndex, byte x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setByte(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setShort(int parameterIndex, short x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setShort(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setInt(int parameterIndex, int x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setInt(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setLong(int parameterIndex, long x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setLong(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setFloat(int parameterIndex, float x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setFloat(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setDouble(int parameterIndex, double x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setDouble(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setBigDecimal(int parameterIndex, BigDecimal x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setBigDecimal(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setString(int parameterIndex, String x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setString(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setBytes(int parameterIndex, byte[] x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setBytes(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setDate(int parameterIndex, Date x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setDate(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setTime(int parameterIndex, Time x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setTime(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setTimestamp(int parameterIndex, Timestamp x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setTimestamp(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setAsciiStream(int parameterIndex, InputStream x, int length) throws SQLException {
		SQLException e = null;
		try {
			delegate.setAsciiStream(parameterIndex, x, length);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setUnicodeStream(int parameterIndex, InputStream x, int length) throws SQLException {
		SQLException e = null;
		try {
			delegate.setUnicodeStream(parameterIndex, x, length);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setBinaryStream(int parameterIndex, InputStream x, int length) throws SQLException {
		SQLException e = null;
		try {
			delegate.setBinaryStream(parameterIndex, x, length);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void clearParameters() throws SQLException {
		delegate.clearParameters();
	}

	@Override
	public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException {
		SQLException e = null;
		try {
			delegate.setObject(parameterIndex, x, targetSqlType);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setObject(int parameterIndex, Object x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setObject(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public boolean execute() throws SQLException {
		SQLException e = null;
		long start = System.nanoTime();
		try {
			eventListener.onBeforeExecute(statementInformation);
			return delegate.execute();
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterExecute(statementInformation, System.nanoTime() - start, e);
		}
	}

	@Override
	public void addBatch() throws SQLException {
		SQLException e = null;
		long start = System.nanoTime();
		try {
			eventListener.onBeforeAddBatch(statementInformation);
			delegate.addBatch();
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterAddBatch(statementInformation, System.nanoTime() - start, e);
		}
	}

	@Override
	public void setCharacterStream(int parameterIndex, Reader reader, int length) throws SQLException {
		SQLException e = null;
		try {
			delegate.setCharacterStream(parameterIndex, reader, length);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, reader, e);
		}
	}

	@Override
	public void setRef(int parameterIndex, Ref x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setRef(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setBlob(int parameterIndex, Blob x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setBlob(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setClob(int parameterIndex, Clob x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setClob(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setArray(int parameterIndex, Array x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setArray(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setDate(int parameterIndex, Date x, Calendar cal) throws SQLException {
		SQLException e = null;
		try {
			delegate.setDate(parameterIndex, x, cal);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setTime(int parameterIndex, Time x, Calendar cal) throws SQLException {
		SQLException e = null;
		try {
			delegate.setTime(parameterIndex, x, cal);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setTimestamp(int parameterIndex, Timestamp x, Calendar cal) throws SQLException {
		SQLException e = null;
		try {
			delegate.setTimestamp(parameterIndex, x, cal);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setNull(int parameterIndex, int sqlType, String typeName) throws SQLException {
		SQLException e = null;
		try {
			delegate.setNull(parameterIndex, sqlType, typeName);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, null, e);
		}
	}

	@Override
	public void setURL(int parameterIndex, URL x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setURL(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setRowId(int parameterIndex, RowId x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setRowId(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setNString(int parameterIndex, String value) throws SQLException {
		SQLException e = null;
		try {
			delegate.setNString(parameterIndex, value);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, value, e);
		}
	}

	@Override
	public void setNCharacterStream(int parameterIndex, Reader value, long length) throws SQLException {
		SQLException e = null;
		try {
			delegate.setNCharacterStream(parameterIndex, value, length);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, value, e);
		}
	}

	@Override
	public void setNClob(int parameterIndex, NClob value) throws SQLException {
		SQLException e = null;
		try {
			delegate.setNClob(parameterIndex, value);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, value, e);
		}
	}

	@Override
	public void setClob(int parameterIndex, Reader reader, long length) throws SQLException {
		SQLException e = null;
		try {
			delegate.setClob(parameterIndex, reader, length);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, reader, e);
		}
	}

	@Override
	public void setBlob(int parameterIndex, InputStream inputStream, long length) throws SQLException {
		SQLException e = null;
		try {
			delegate.setBlob(parameterIndex, inputStream, length);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, inputStream, e);
		}
	}

	@Override
	public void setNClob(int parameterIndex, Reader reader, long length) throws SQLException {
		SQLException e = null;
		try {
			delegate.setNClob(parameterIndex, reader, length);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, reader, e);
		}
	}

	@Override
	public void setSQLXML(int parameterIndex, SQLXML xmlObject) throws SQLException {
		SQLException e = null;
		try {
			delegate.setSQLXML(parameterIndex, xmlObject);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, xmlObject, e);
		}
	}

	@Override
	public void setObject(int parameterIndex, Object x, int targetSqlType, int scaleOrLength) throws SQLException {
		SQLException e = null;
		try {
			delegate.setObject(parameterIndex, x, targetSqlType, scaleOrLength);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setAsciiStream(int parameterIndex, InputStream x, long length) throws SQLException {
		SQLException e = null;
		try {
			delegate.setAsciiStream(parameterIndex, x, length);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setBinaryStream(int parameterIndex, InputStream x, long length) throws SQLException {
		SQLException e = null;
		try {
			delegate.setBinaryStream(parameterIndex, x, length);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setCharacterStream(int parameterIndex, Reader reader, long length) throws SQLException {
		SQLException e = null;
		try {
			delegate.setCharacterStream(parameterIndex, reader, length);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, reader, e);
		}
	}

	@Override
	public void setAsciiStream(int parameterIndex, InputStream x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setAsciiStream(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setBinaryStream(int parameterIndex, InputStream x) throws SQLException {
		SQLException e = null;
		try {
			delegate.setBinaryStream(parameterIndex, x);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, x, e);
		}
	}

	@Override
	public void setCharacterStream(int parameterIndex, Reader reader) throws SQLException {
		SQLException e = null;
		try {
			delegate.setCharacterStream(parameterIndex, reader);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, reader, e);
		}
	}

	@Override
	public void setNCharacterStream(int parameterIndex, Reader value) throws SQLException {
		SQLException e = null;
		try {
			delegate.setNCharacterStream(parameterIndex, value);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, value, e);
		}
	}

	@Override
	public void setClob(int parameterIndex, Reader reader) throws SQLException {
		SQLException e = null;
		try {
			delegate.setClob(parameterIndex, reader);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, reader, e);
		}
	}

	@Override
	public void setBlob(int parameterIndex, InputStream inputStream) throws SQLException {
		SQLException e = null;
		try {
			delegate.setBlob(parameterIndex, inputStream);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, inputStream, e);
		}
	}

	@Override
	public void setNClob(int parameterIndex, Reader reader) throws SQLException {
		SQLException e = null;
		try {
			delegate.setNClob(parameterIndex, reader);
		} catch (SQLException sqle) {
			e = sqle;
			throw e;
		} finally {
			eventListener.onAfterPreparedStatementSet(statementInformation, parameterIndex, reader, e);
		}
	}

	@Override
	public ParameterMetaData getParameterMetaData() throws SQLException {
		return delegate.getParameterMetaData();
	}

	@Override
	public ResultSetMetaData getMetaData() throws SQLException {
		return delegate.getMetaData();
	}

}
